@book{776,
	author = { Dobler, Donald W. and  Burt, David N.},
	title = {Purchasing and Supply Management:},
	publisher = {McGraw-Hill,},
	year = { 1996.},
	address = {New York :},
	edition = { 6th ed.,},
	note = { Rev. ed. of: Purchasing and materials management. 5th ed. c1990.}
}